The following lemma is concerned with Krylov's and Khasminskii's estimate for
the solution process \((X_t)_{t\ge 0}\)  to (REF ), which is more or less
standard; see, for instance, [1]}, [2]}, [3]}, [4]}, [5]}. Whereas, we
herein state them and provide a sketch of its
proof by using explicit upper bound.
